Included "epublib-core" through MavenCentral.

app/build.gradle.kts

@@ -137,7 +137,7 @@ dependencies {
     implementation("com.tom-roush:pdfbox-android:latest.release")
 
     // Epub parser
-    implementation("nl.siegmann.epublib:epublib-core:latest.release") {
+    implementation("com.positiondev.epublib:epublib-core:3.1") {
         exclude("org.slf4j")
         exclude("xmlpull")
     }

settings.gradle.kts

@@ -5,9 +5,6 @@ pluginManagement {
         google()
         mavenCentral()
         gradlePluginPortal()
-        maven {
-            url = uri("https://github.com/psiegman/mvn-repo/raw/master/releases")
-        }
     }
 }
 dependencyResolutionManagement {
@@ -15,9 +12,6 @@ dependencyResolutionManagement {
     repositories {
         google()
         mavenCentral()
-        maven {
-            url = uri("https://github.com/psiegman/mvn-repo/raw/master/releases")
-        }
     }
 }